X-Git-Url: https://err.no/cgi-bin/gitweb.cgi?a=blobdiff_plain;f=fs%2Fext4%2Fballoc.c;h=e9fa960ba6da9fa6cf573fc517d70808e519ab83;hb=b8e6c91c74e9f0279b7c51048779b3d62da60b88;hp=1ae5004e93fc20ffd99a652efa6be9897a0518c1;hpb=b0e0c9e7f6d5764633e93944dafd896dd6097318;p=linux-2.6

diff --git a/fs/ext4/balloc.c b/fs/ext4/balloc.c
index 1ae5004e93..e9fa960ba6 100644
--- a/fs/ext4/balloc.c
+++ b/fs/ext4/balloc.c
@@ -1626,6 +1626,9 @@ ext4_fsblk_t ext4_has_free_blocks(struct ext4_sb_info *sbi,
 		free_blocks =
 			percpu_counter_sum_and_set(&sbi->s_freeblocks_counter);
 #endif
+	if (free_blocks <= root_blocks)
+		/* we don't have free space */
+		return 0;
 	if (free_blocks - root_blocks < nblocks)
 		return free_blocks - root_blocks;
 	return nblocks;